baber/WOPTO huggingface dataset:
Patent GB-819841-A (GB)
Title: Copper-containing disazo dyestuffs
IPC: C09B33/02
Filed: 1957-08-15
Abstract: The invention comprises the copper complexes of disazo dyestuff of formula <FORM:0819841/IV (c)/1> wherein R is a naphthalene radical, R1 is an aromatic radical linked in the p-positions, R2 is a naphthalene radical having the hydroxyl group ortho to the azo group and R3 is an aromatic radical having a metallizable group such as a hydroxy, alkoxy or carboxy group ortho to the azo group.  The unmetallized dyes are obtained by diazotizing an amine R3.NH2 and coupling with a suitable unsymmetrical urea, which may be obtained from the amines R4-N=N-R1-NH2 and H2N-R2-OH with the other or, in admixture with symmetrical ureas, by phosgenation of a mixture of the amines.  Coppering of the disazo dyes is carried out in known manner. The coppered dyes dye cotton and regenerated cellulose in reddish brown, Bordeaux red to reddish violet shades.  In examples: (1) the mixed urea obtained from the phenylurethane of 2-(41-amino - 61 - methylbenzene - 11 - azo) - naphthalene-4 : 8-disulphonic acid and 2-amino-5-naphthol-7-sulphonic acid is coupled with the diazo compound from 1-amino-2-hydroxy-3-chlorobenzene-5-sulphonic acid in aqueous pyridine, the dyestuff is isolated, dissolved in water and coppered by heating with copper sulphate; (2) the mixed urea obtained from the phenylurethane of 1-(41-amino-31-methoxy-61-methylbenzene - 11 - azo) - 8 - (benzenesulphonyloxy)-naphthalene - 3:6 - disulphonic acid and 2 - amino - 5 - naphthol - 7 - sulphonic acid is coupled with the diazo compound from 1-amino-2 - hydroxy - 3 - chlorobenzene - 5 - sulphonic acid, 1 - amino - 2 - hydroxy - 5 - chlorobenzene, or 1 - amino - 2 - methoxybenzene - 5 - sulphonic acid, the benzenesulphonic acid ester group is saponified by treatment with aqueous caustic soda and the dyestuff coppered (the benzenesulphonyl group may also be removed before the coupling); (3) the mixed urea obtained from the phenylurethane of 1-(41-amino-31:61-dimethylbenzene - 11 - azo) - 8 - (benzenesulphonyloxy) - naphthalene - 3:6 - disulphonic acid and 2-amino-5-naphthol-7-sulphonic acid is coupled with the diazo compound from 1-amino - 2 - hydroxy - 3 - nitrobenzene - 5 - sulphonic acid or 2-amino-1-naphthol-4-sulphonic acid and then treated as in (2); (4) the mixed urea obtained from the phenylurethane of 1-(41-amino-31:61-dimethylbenzene -11-azo1-8-(benzenesulphonyloxy) - naphthalene - 3:6-disulphonic acid and 2-amino-8-naphthol-6-sulphonic acid is coupled with the diazo compound from 1 - amino - 2 - hydroxy - 3 - chlorobenzene-5-sulphonic acid and then treated as in (2); (5) the mixed urea obtained from the phenylurethane of 1-(41-amino-71-sulphonaphthalene - 11 - azo) - 8 - (benzenesulphonyloxy)-naphthalene-3:6-disulphonic acid and 2-amino-5-naphthol-7-sulphonic acid is coupled with the diazo compound from 2-amino-4-chlorobenzoic acid and then treated as in (2).
Patent GB-701043-A (GB)
Title: Improved means for preparing patterns for garments
IPC: A41H3/01
Filed: 1950-10-24
Abstract: 701,043. Garment patterns. TALLENTS, K. I., and TALLENTS, J. A. Oct. 5, 1951 [Oct. 24, 1950], No. 25908/50. Class 141 A template for preparing garment patterns of different sizes has a plurality of sets of perforations identified by markings and comprises a main portion having a recess into which fits a second portion. As shown, an island O<7> is provided within the recess O<6> in the main portion to fit into a cut-out in the second portion, and a reinforced foldline O<8> is provided in both portions. The main portion has an out- Une O<1> for a front bodice pattern, an outline O<2> for a back bodice pattern, and its outer edge O<3> constitutes a sleeve pattern. The second portion has the remainder of the front bodice pattern and an outline for the upper part of a skirt or trousers pattern. The back bodice pattern has numbered perforations O<22>, word markings O<21> reference letters A, B, C, E, F, G at the corners, and an arrow D at the edge between C and E, all these designations being in one colour. Corresponding markings on the other patterns are in different colours. The second portion has the cutout shaped to provide armhole curves whilst the outlines of both portions are 'shaped so as to provide suitable curves for joining up the marks made through the perforations.
Patent GB-638385-A (GB)
Title: Buoyancy apparatus
IPC: F03B17/02
Filed: 1947-09-24
Abstract: 638,385. Buoyancy apparatus. STRETTON, W. Sept. 24, 1947, No. 25963. [Class 69 (i)] In a buoyancy apparatus wherein a plurality of air-cylinders mounted on a cylindrical frame are submerged in water, the cylinders being collapsed at one point in the rotary path of the frame and expanded at another,the air-cylinders 7 are equidistantly spaced around the frame 8 with opposed pairs of cylinders connected by a tube 14. The air cylinders are expanded when at the base of the tank and contracted when at the top through the action of latticed struts or lazy-tong devices 18 attached at their outer ends to the end-plates 16 and at their inner ends to screw-threaded collars 19 co-operating with rods 20 whose halves are threaded in opposite directions, the lazy-tong devices being actuated by gear mechanisms controlled by the rotation of gear-wheels 29 contacting the fixed racks 31, 33.
Patent GB-1496458-A (GB)
Title: Electroplating aluminium with a strippable copper deposit
IPC: H05K3/02
Filed: 1976-06-22
Abstract: 1496458 Strippable Cu electro-plate on Al base GOULD Inc 22 June 1976 [7 July 1975] 25970/76 Heading C7B A mechanically strippable Cu electro-plate is applied to Al which has first been zincated in a bath as below, followed by substantially complete removal of the zincate layer using acid. The bath referred to is based on alkali metal hydroxide and Zn oxide and contains at least 0À25 g/l of a soluble Fe, Co and /or Ni salt together with a complexing agent for the metal of this salt and optionally the nitrate and/or nitrite of Na, K and/or NH 4 . The salt may be chloride, sulphate, nitrate or nitrite. As acid, HCl, HNO 3  and H 2 SO 4  are specified. As complexant, Rochelle salt, Na gluconate, mannitol, glycerin and tannates are listed. Zincating may take 15-30 sec at 25-40‹C, and only one zincating step is recommended. Usual NaOH and HNO 3  precleaning steps are used. Pyrophosphate Cu may be first applied, followed by build-up using sulphate Cu. An intermediate Zn or In layer may be electroplated to reduce the peel strength of the Cu layer.
Patent GB-444386-A (GB)
Title: Two-stroke cycle internal combustion radial motor
IPC: F01L25/04
Filed: 1935-09-19
Abstract: 444,386. Radial-cylinder two-stroke engines. HUMBOLDT-DEUTZMOTOREN AKT. - GES., 149, Deutz - M³lheimerstrasse, Deutz, Cologne, Germany. Sept. 19, 1935, No. 26006. Convention date, Sept. 20, 1934. [Class 7 (ii)] In a radial-cylinder engine the crank-case is double-walled. Air compressed by a pair of Roots' blowers 16, housed in a casing- extension on one side of the engine, passes into the adjoining annulus 19 in the crank-casing, then by way of the passages formed between the casing-walls and adjacent cylinder-seatings to an annulus 20 on the other side of the engine and to radiating passages 21 leading to the inlet ports. The casing is stiffened internally and externally by ribs. A bevel wheel 17 on the crank-shaft drives the blowers, and may drive other accessories housed in the same extension of the crank-case.
Patent GB-241395-A (GB)
Title: Improvements relating to weft bobbins
IPC: B65H75/10
Filed: 1924-11-01
Abstract: 241,395. Blackburn, A. L. Nov. 1, 1924. Bobbins.-Th-D tapered corrugated shank 2 and the head 3 of the bobbin are formed from separate sheet. metal blanks. The cylindrical extension 4 of the head fits either within or outside the shanks 2, and is welded or otherwise fixed thereto. The head 3 has driving recesses 5 formed therein, while the shank may have a metal cap 6 fixed thereto. The shank 2 may be spirally corrugated and may be of double thickness.
Patent GB-892980-A (GB)
Title: Blood vessel prosthesis and process of making same
IPC: A61F2/06
Filed: 1959-10-29
Abstract: In making artificial arteries from extruded synthetic resin tubes or woven, knitted or braided tubes made from polytetrafluorethylene or similar fibres, the tube is corrugated by placing it on a rod, wrapping a thread or wire helically around it, compressing it longitudinally to form corrugations between the turns of the thread, and setting the corrugations such as by heating or by chemical means. The finished tube is preferably bleached and shrunk by boiling in a bath of nitric, sulphuric and perchloric acids, this process rendering it less reactive to body tissues and less porous.  A final product of laminated construction may be formed by superimposing a number of tubes on the former prior to wrapping and in this case the various layers may be of different physical characteristics. Specification 892,981 is referred to.
Patent GB-604382-A (GB)
Title: Apparatus for accurate measurement of displacement by variation of electrical capacity
IPC: G01B5/08
Filed: 1945-10-08
Abstract: 604,382. Electric condensers. BUISSON, P. Oct. 8, 1945, No. 26194. Convention date, Oct. 7, 1944. [Class 37] [Also in Group XXXVIII] A condenser comprises toothed electrodes 3, 4 co-operating as a screw and nut, but without physical contact. The nut electrode 4 is fixed, and the screw electrode 3 movable axially without rotation through the nut 4 to vary the capacity cyclically, the capacity being brought to any value within the cycle for any predetermined axial position by rotating the screw through a drum 5. In a modification, the screw electrode 3 co-operates with two nut electrodes, Fig. 7 (not shown), displaced relatively by half a pitch so that axial movement of the screw 3 causes one capacity to increase as the other decreases. In a further modification, both screw and nut electrodes comprise two start threads insulated from one another to form four variable condensers as above.
Patent GB-897833-A (GB)
Title: Improvements in or relating to stoppers
Inventor: RICHET HENRI
IPC: B65D51/18
Filed: 1959-07-30
Abstract: 897,833. Crown corks. CROWN CORK CO. Ltd. July 30, 1959, No. 26225/59. Class 125(3). A crown cork comprises a metal shell 4 having a crimped skirt 9 outwardly flared from an intermediate point 10 which is of smaller diameter than any other , part of the shell and a resilient packing 1 preferably of polyethylene, having an outwardly projecting bead 3 arranged to releasably hold the packing in the shell. The packing having a peripheral skirt adopted to grip the rim of a container even when the packing is removed from the shell. The packing may be thickened at its periphery and may have attached thereto a pull tab. - The inside of the metal shell is coated with varnish.
Patent GB-242077-A (GB)
Title: Improved motor vehicle convertible into a hearse
IPC: B60P3/42
Filed: 1924-11-04
Abstract: 242,077. Bailey, A. H. Nov. 4, 1924. Hearses; omnibuses.-An omnibus is convertible into a hearse having a passenger compartment. To provide the coffin compartment, the front side windows of the omnibus are lowered, a coffin board 5, Fig. 3, is removed from a recess behind the driver's seat and laid on the waist rails, front and rear partitions 17, Fig. 5, which are normally stowed in the roof, are positioned and secured to the pillars 6, and bay windows comprising window frames hinged to metal rods are slid into position by the ends of the rods 2 being guided in channels 7.
Patent GB-1371440-A (GB)
Title: Process for preparing a wide-pore adsorbent for use in chromato graphy
IPC: C01B33/16
Filed: 1972-06-06
Abstract: 1371440 Silica adsorbant MOSKOVSKY GOSUDARSTVENNY UNIVERSITET IMENI MV LONONOSOVA 6 June 1972 26265/72 Heading C1A [Also in Division B1] A wide pore silica adsorbent for use in chromatography is made by forming a suspension of non-porous silica, adding a modifying agent to the suspension, drying to form a gel and then a xerogel and grinding the xerogel. The suspension of silica may be in water, in which case the modifying agent is selected from hydroxides of metals or of ammonia salts of alkali or alkaline earth metals or carbon black or the dispersion agents may be an organic solvent and thus the modifying agent may be polyphenyldisiloxane or a polycondensation product of phenolphthalein and phthalic acid. After drying the xerogel but prior to grinding it may be calcined in air or an inert atmosphere at a temperature of from 250‹ to 900‹ C. The concentration of hydroxides or ammonium salts may be from 1 to 40%, carbon content 1 to 60% and the polyphenyldisiloxane or said poly condensation product from 2 to 10%, all by weight of silica.
Patent GB-857655-A (GB)
Title: Industrial lift truck
IPC: B66F9/065
Filed: 1958-08-15
Abstract: 857,655. Lift trucks. YALE & TOWNE MANUFACTURING CO. Aug. 15, 1958 [Dec. 3, 1957], No. 26275/58. Class 78 (3). [Also in Group XXXI] A luffing arm fork lift truck has the bottom of its battery compartment 50 located below its wheel axles. A removable plate 51 permits access to the compartment and rollers 52 facilitate loading and unloading of the battery. The lifting mechanism is identical with that described in Specification 857,656.
Patent GB-1193896-A (GB)
Title: Epoxy Polyvinyl Chloride Resins
IPC: C08L63/00
Filed: 1968-05-31
Abstract: 1,193,896. Coated steel. CIBA Ltd. 31 May, 1968 [2 June, 1967], No. 26285/68. Heading B2K. [Also in Division C3] Steel panels are coated with a composition comprising a dispersion of a vinyl chloride resin in a liquid plasticiser and an epoxy resin composition comprising an epoxy resin, e.g. a diglycidyl ether of bisphenol A, dicyandiamide and benzyldimethylamine. A preferred composition comprises 100 parts by wt. of polyvinyl chloride resin, 50.4 parts of dioctyl phthalate, 3 parts of epoxidised soya bean oil, 2.5 parts of stabiliser, 1.0 part of thixotropic agent, 36.8 parts of liquid epoxy resin, 3.7 parts of dicyandiamide, 0.15 parts of benzyldimethylamine, 8.1 parts of TiO 2  and 27.0 parts of CaCo 3 . The coatings may be cured by heating, e.g. for 15 minutes at 190‹C.
Patent GB-1537418-A (GB)
Title: Apparatus for solvent extraction
IPC: B01D11/02
Filed: 1977-06-23
Abstract: 1537418 Solids/solvent extractor DRAVO CORP 23 June 1977 [25 Aug 1976] 26294/77 Heading B1Q A - solids/solvent extractor comprises a vapour tight vessel 10, Fig. 1 with a plurality of cells 70 formed by a plurality of radially extending walls attached for rotation to rotor 46, each cell having a solids retaining liquidpervious bottom closure, a back 92 for maintaining the bottom closures in a substantially closed position during a predetermined section of a rotational path of each cell, their being a gap in the track above a discharge chute 98 so that the bottom closures open when above the chute, conduits for successively introducing a solvent into the cells from above the predetermined section of rotational path, and a plurality of compartments below the cells for collecting solvent therefrom, the radially extending walls of cells 70 being supported by beams 62 which are attached to rollers 86 which run on track 90. Each cell side wall may have the structure as shown in Fig. 3.
Patent GB-1183074-A (GB)
Title: Magnetic Deflection Circuit for a Cathode Ray Tube
Inventor: PERKINS DONALD WILLIAM
IPC: H03K4/62
Filed: 1967-06-07
Abstract: 1,183,074. Transistor cathode-ray tube deflection circuits. GENERAL ELECTRIC CO. 7 June, 1967 [7 Nov., 1966], No. 26395/67. Heading H3T. In a deflection circuit for a cathode-ray tube, centre tapped deflection coils 11, 13 are supplied in push-pull by respective amplifying elements (such as transistors 21, 23), the centre tap of the deflection coils 11, 13 being connected to a direct current supply via a high value inductor 17, resistors such as 35, 37, 43, 45 providing common-mode feedback to the input of the amplifying devices. As described, balanced signals at 27, 29 are amplified by differential amplifiers 51 and 59 before being fed to a Darlington pair output stage comprising transistors 73, 75, 21, 23. Common-mode feedback from the junction of resistors 43, 45 is arranged to modulate a transistor 67 in the emitter circuit of amplifier 59, whilst differential-mode feedback is taken to the inputs of amplifier 51. The amplifier may operate in class A for inputs having a small rate of change, but one or other of the output transistors 21, 23 becomes saturated during a step function input, giving high voltage pulses (Fig. 2, not shown) at the collector, the amplitude of which may be minimized by the self-capacitance of the circuit or by avalanche diodes (not shown) connected between collector and emitter or collector and base. In Fig. 4 (not shown) compensation for the base current in resistor 35 is achieved by connecting the collector of transistor 73 via a resistor to a positive potential and including the emitter-collector path of a further transistor between the collector of 73 and the emitter of 21. In Fig. 5 (not shown) this further transistor is replaced by an avalanche diode.
Patent GB-665558-A (GB)
Title: Improvements in or relating to suction cleaner nozzles
IPC: A47L9/02
Filed: 1948-10-11
Abstract: 665,558. Suction cleaner nozzles. ELECTROLUX CORPORATION. Oct. 11, 1948 [Nov. 8, 1947], No. 26453/48. Class 8 (i). The front and rear surface-engaging lips of a suction nozzle comprise a cylindrical rod 40, Fig. 2, and a plate 46 respectively and are each separately attached to the nozzle body 10, e.g., by surface engaging members 50. The body 10 comprises a unitary casting having a bottom opening bounded by the lips 40, 46 the end members 50, and a back plate 24, and a top opening 11, Fig. 1, providing a central high velocity aperture surrounded by air directing channels 12. A suction tube 20 extends through the back plate 24 to communicate with either nozzle selectively. The rod 40 may be rotated by an arm 45 to move teeth 44 out of contact with the surface being cleaned, and the plate 46 has a central fluted portion 46<SP>1</SP> and an internal flange 47 serving as an upper boundary of the suction passage. Bumper rings 14, 17 are located about the top and bottom suction openings.
Patent GB-427796-A (GB)
Title: An alternating current phasing device
IPC: H02M5/12
Filed: 1933-09-26
Abstract: 427,796. Phase changing. MATTHEWS, L. H., and FONSECA, E. C. M. D'ASSIS-, 10, Hensman's Hill, Clifton, Bristol. Sept. 26, 1933, No. 26525. [Class 38 (ii)] In a phase-shifting device comprising a pair of transformer primary coils a arranged at 90‹ to each other and co-operating with a relatively rotatable secondary coil b, the primary coils are supplied with currents in quadrature derived from a single phase supply c through a phasesplitting arrangement comprising a condenser e in series with one coil and a resistance d in series with the other, any discrepancy between the currents in the primary coils being corrected by connecting a resistance f in shunt with one of the coils. A potentiometer h is associated with the secondary for varying the amplitude of the output voltage.
Patent GB-1105498-A (GB)
Title: Process for the purification of h or a n/h mixture
IPC: C01B4/00
Filed: 1965-06-23
Abstract: H2 or a N2/H2 mixture is purified by treatment first with liquid ammonia and then with a solution of NaNH2 in liquid ammonia prior to passing it into a plant for deuterium enrichment working on the NH3/H2 hot/cold system using KNH2 as a catalyst.  The gas may be passed in countercurrent to the NaNH2 solution and the impurities removed are CO, CO2 and H2O. Excessive amounts of water may be removed using a zeolite molecular sieve before treatment with sodamide.  The sodamide may be prepared in situ from sodium and liquid ammonia under the catalytic influence of the column wall. The isotope exchange process is conventional.
Patent GB-1311158-A (GB)
Title: Magnetic memory devices and the manufacture thereof
IPC: G11B5/70
Filed: 1970-06-02
Abstract: 1311158 Electro-phonetic deposition of magnetic layers A MATSUSHITA and T KAGITANI 2 June 1970 [2 June 1969] 26606/70 Heading C7B [Also in Division H1] A magnetic memory device consists of a magnetic layer deposited on a substrate, wherein the magnetic layer includes a pigment consisting of pulverized magnetic oxide and the concentration of the pigments is low in the portion of the layer near the substrate and higher in the portion of the layer near the outer surface. It may be made by preparing an emulsion by dispersing the granular magnetic oxide in an aqueous solution containing an anionic high molecular weight electrolyte, placing the substrate on which the magnetic oxide is to be deposited in the emulsion so that the substrate constitutes an anode, applying an electrical potential between the anode and a cathode, the deposition being carried out in a plurality of steps employing aqueous solutions containing successively increasing amounts of the granular magnetic oxide. Specified magnetic oxides are FC 2 O 3  and CrO 2 , and specified electrolytes are an emulsion of water-soluble polyalkyls or polyphenols or a polymer soap with distilled water. When the deposition is carried out in two stages, the magnetic oxide employed in the first stage may be of "soft" magnetic characteristic, and that employed in the second stage of "hard" magnetic characteristic or vice versa.
Patent GB-952809-A (GB)
Title: Improvements in or relating to pit-prop assemblies
IPC: E21D23/00
Filed: 1962-07-11
Abstract: 952,809. Advancing mine roof supports. SOC. D'APPLICATIONS GENERALES D'ELECTRICITE ET DE MECANIQUE. July 11, 1962 [July 11, 1961], No. 26618/62. Addition to 915,998. Heading E1E. In a pit prop assembly as claimed in the parent Specification the upper parts of the two groups of props are inter-connected by a tie member such as an adjustable chain and are provided with co-operating skids 6, 7. The operating gear at the lower ends of the props have a cover adapted to be raised by a chain or chains connected to the upper part of one of the groups of props, see Figs. 6 - 9 (not shown).
Patent GB-634132-A (GB)
Title: Improvements in or relating to snap-action electric switches
IPC: H01H23/12
Filed: 1947-10-04
Abstract: 634,132. Snap-action switches. ASHLEY ACCESSORIES, Ltd., and EVERITT, L. H. R.. Oct. 4, 1947, No. 26744. [Class 38 (v)] A slow-break, A.C. tumbler switch has a rectangular frame-like movable contact 19 pivoted at 20 to the dolly 14, a dead-centre spring 33 stretched between the dolly pivot 24 and a bight 22a of the contact 19 holding the latter in bridging engagement with fixed contacts 11. An abutment 26 comprising an inclined face 27 and a vertical face 29a is so positioned on the switch base 10 that as the dolly 14 is moved to open the switch the bight 22a first moves down the face 29a to provide a wiping action between the contacts 19, 11, and then engages the inclined face 27 to slowly separate the contacts 19, 11, the spring 23 completing the movement with a snap-action. In a two-way switch a pair of oppositely-disposed abutments 26 are provided. The Provisional Specification refers to Specification 603,626.